Intake Air Heater: Service and Repair
INTAKE AIR HEATER (IAH) REPLACEMENTREMOVAL PROCEDURE
1. Remove the upper intake manifold sight shield using the following procedure:
1.1. Remove the retaining bolt in the front of the shield.
1.2. Lift up on the front of the shield.
1.3. Lift the shield off the rear bracket.
2. Remove the Intake Air Heater harness connector nut.
3. Remove the Intake Air Heater from the inlet pipe.
INSTALLATION PROCEDURE
NOTE: Refer to Fastener Notice in Service Precautions.
1. Install the Intake Air Heater in the inlet pipe.
Tighten
Tighten the Intake Air Heater to 50 N.m (37 lb ft).
2. Connect the Intake Air Heater harness connector.
Tighten
Tighten the Air Intake Heater electrical nut to 5 N.m (44 lb in.).
3. Install the upper intake manifold sight shield.
Tighten
Tighten the upper intake manifold sight shield bolt to 9 N.m (80 lb in.).